Upgrade your Berkey Black filters to MaxClear
Don't settle for claims. Unlike Berkey, Culligan with MaxClear Technology filters are IAPMO certified to remove contaminants including microplastics, lead, total PFAS (forever chemicals), pharmaceuticals and pesticides.
Your current setup, but make it MaxClear.
We know you've put a lot into your gravity system. That's why MaxClear Technology filters are designed to fit seamlessly into Berkey and most other gravity filter devices. With an easy swap, you'll get cleaner, healthier water you can trust - without replacing what you already own. No tools, no hassle, just simple installation.
Save on MaxClear Replacement Filters for your Berkey
Shop nowFilters what others don't
| Contaminants |
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|---|---|---|
| Microplastics | ||
| Lead | ||
| Total PFAS | ||
| Pharmaceuticals | ||
| Pesticides | ||
| Chlorine | ||
| Chloramine |
This table represents certified contaminant reduction. The results presented are sourced from the available certification data for BOROUX® Foundation™ Black Filters and Berkey® Black Berkey®(BB9-2) Water Filters. As of 7/15/2025 BOROUX® and Berkey® Performance Data Sheets.
Seamless replacements filters for your Berkey
Switching from Berkey to Culligan is easy. MaxClear™ Technology filters are universally compatible with the leading gravity systems, meaning you can keep your existing system while upgrading to better water filter technology. Enjoy cleaner water without the hassle.
What people are saying
Need to replace your Berkey system?
Culligan gravity systems fit seamlessly into your home, RV, or campsite. With a compact footprint , stainless steel spigot and a free metal stand to protect your kitchen, our systems make countertop use effortless. Berkey systems can take up more space and only come with a flimsy plastic spigot. Culligan makes clean water convenient and durable.
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MaxClear TechnologyScout 2.25 Gallon Gravity Countertop System
For smaller households (1-3 people)From -
MaxClear TechnologyVenture 3 Gallon Gravity Countertop System
For larger households (4+ people)From
We never take shortcuts
For over 90 years, Culligan has been on a mission to provide clean, healthy, great-tasting water. We are committed to meeting the most rigorous safety standards so you can trust that our products are proven and reliable. Here's why IAPMO certification is better than third-party testing used by other brands:
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Highest standards
IAPMO certification uses NSF/ANSI standards, curated to worst-case conditions so our products work for all.
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Ongoing certification
IAPMO certification is renewed overtime to ensure our products are always working whilethird-party testing is only completed once and may notconform to any changes in industry standards.
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Real-world relevance
Third-party testing is not monitored and could use water that is dissimilar to what you might get out of your faucet.
Frequently Asked Questions
Yes. Many users rely on gravity filters for travel, RV use, and emergency preparedness.
Culligan with MaxClear Technology filters are designed to fit many popular gravity filtration systems like Berkey, ProOne, Alexapure, Aquacera, Boroux, Purewell, Waterdrop, Patriot Pure, and more.
Yes. Culligan with MaxClear Technology filters are certified to reduce 99% of Total PFAS.
Yes. They are certified to reduce microplastics, along with lead and Total PFAS.
Most households replace filters every 6 months for best performance.
Yes. They are IAPMO certified to NSF/ANSI standards for contaminant reduction.